Iodine - Wikiparency

# Iodine ## 🧊 Iodine · 3D (three.js) <iframe src="https://wikitube-elements.netlify.app/?el=I&embed=1" width="100%" height="620" frameborder="0" style="border:0;border-radius:12px;overflow:hidden" allowfullscreen loading="lazy" title="The Elements 3D microsim - Iodine"></iframe> *Iodine in the live three.js Elements explorer — drag to orbit the atom, click any tile to compare, slide the temperature.* · [▶ open full](https://wikitube-elements.netlify.app/?el=I)  !Iodine plate.svg *Plate 53 of 118 - animated Bohr shells, stylized per Madelung filling; engraving style per house Arcanity kit.* ## Microsim To Do *Claimable rows, house pattern. Real Wikipedia articles only.* - Thyroid hormone - iodine's biological role - Iodine-131 - nuclear fission product and bioaccumulation - Iodine deficiency disorder - health and prevention - Halogen - iodine's group chemistry ## Links (Wikipedia order)  `2-Iodoxybenzoic_acid` · `3-Iodothyronamine` · `Acetic_acid` · `Acetone` · [[Actinium]] · `Alcohol_(chemistry)` · `Aldehyde` · `Alkali_metal` · `Alkaline_earth_metal` · `Alkaloid` · `Alkene` · `Alkyne` · [[Aluminium]] · `Aluminium_iodide` · [[Americium]] · `Amine` · `Ammonia` · `Anadarko_Basin` · `Analytical_chemistry` · `Anaphylaxis` · `Ancient_Greek` · `André-Marie_Ampère` · `Angiography` · `Anisotropy` · `Annual_Reviews_(publisher)` · [[Antimony]] · `Antimony_pentafluoride` · `Antiseptic` · [[Argon]] · [[Arsenic]] · `Artery` · `Assay` · [[Astatine]] · `Astatine_iodide` · `Atmospheric_pressure` · `Atomic_number` · `Atomic_radius` · `Azeotrope` · `Azide` · `Band_gap` · [[Barium]] · [[Berkelium]] · `Bernard_Courtois` · [[Beryllium]] · 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`Trichlorofluoromethane` · `Triiodide` · `Triiodothyronine` · `Triphenylphosphine` · `Triple_point` · [[Tungsten]] · `Tyrosine` · `Ullmann's_Encyclopedia_of_Industrial_Chemistry` · [[Uranium]] · `Valence_electron` · `Van_Arkel–de_Boer_process` · `Van_der_Waals_force` · `Van_der_Waals_radius` · [[Vanadium]] · `Vapor_pressure` · `Vegetable` · `Victor_Grignard` · `WHO_Model_List_of_Essential_Medicines` · [[Wayback_Machine]] · `Weight_gain` · `Williamson_ether_synthesis` · `World_Health_Organization` · `Wurtz_reaction` · [[Xenon]] · `Xenon-135` · `Xenon_difluoride` · [[Ytterbium]] · [[Yttrium]] · [[Zinc]] · [[Zirconium]] > **Official MAIN - Chemical element, Z = 53.** Part of the Elements Canon (one canonical page per element). Infobox grounded in [Wikipedia: List of chemical elements](https://en.wikipedia.org/wiki/List_of_chemical_elements), fetched 2026-07-08. Full article: [Wikipedia: Iodine](https://en.wikipedia.org/wiki/Iodine).  ## Key facts (infobox) | | | |---|---| | Symbol - Z | I - 53 | | Group - Period - Block | 17 - 5 - p-block | | Atomic weight (Da) | 126.90 | | Density (g/cm3) | 4.933 | | Melting - Boiling (K) | 386.85 - 457.4 | | Electronegativity (Pauling) | 2.66 | | Crustal abundance (mg/kg) | 0.45 | | Origin | primordial | | Phase (STP) | solid | | Name origin | Greek ioeides, 'violet' | *Bracketed weights are the mass number of the most stable isotope; values in parentheses are predictions (per the source table).* ## Story Iodine was discovered in 1811 by French chemist Bernard Courtois through the treatment of seaweed ash; the name derives from the Greek ioeides, meaning violet, for the color of its vapors. Iodine is moderately scarce (0.45 mg/kg) and occurs in seawater, mineral deposits (called caliche), and iodine-rich brines. Iodine is a dark blue-gray solid at room temperature that sublimes to a violet vapor. It is essential for human health as a component of thyroid hormones; dietary iodine deficiency causes goiter and cretinism. [model-prior - verify] Iodine compounds are used as antiseptics and disinfectants (iodine tinctures, iodophors). Iodine-131 is an important fission product in nuclear reactors; its release during accidents is a major health hazard due to thyroid uptake. [model-prior - verify] Iodine is also used in analytical chemistry and as a catalyst in the Ostwald process. The corpus engages iodine through both its biological necessity and its role as a radioactive fission product in nuclear chemistry—an element of immediate consequence to human health. ## Corpus connections - R.E.A.C.T.I.O.N. - the Chemistry hub - Centers of Excellence Portal - [[Technetium|Technetium - the element made before found]] - the canon's patron - and Technitium, the School - Solar System Mining Surveys - iodine's biological necessity and nuclear presence ## Vocational-Technical Semiotics The element speaks the canon's shared signs: the periodic table cell (I, group 17, period 5), isotope notation, and hazard pictograms ghs where handling demands it. ## Sources Infobox: [en.wikipedia.org/wiki/List_of_chemical_elements](https://en.wikipedia.org/wiki/List_of_chemical_elements) (fetched 2026-07-08); etymology per the same table's notes. Story sources to be added at enrichment. ## Navigation - Canon: Elements Canon index - neighbors by Z: [[Tellurium|Tellurium (52)]] - [[Xenon|Xenon (54)]] - R.E.A.C.T.I.O.N. - Centers of Excellence ## Wikipedia : Wikitube **Strict pair:** [Wikipedia](https://en.wikipedia.org/wiki/Iodine) : [Wikitube](https://en.wikitube.io/wiki/Iodine) ## Previous hub tags Tree parents: [[Helium]] · [[Hydrogen]] · [[Oxygen]]. Legacy hubs: none. --- *Sources: 1 legacy note. Minted wave 1, 2026-07-30 (v1.6 order).*